From: Matthew Wilcox <willy@infradead.org>
To: Frederic Weisbecker <frederic@kernel.org>
Cc: LKML <linux-kernel@vger.kernel.org>,
Andrew Morton <akpm@linux-foundation.org>,
Ingo Molnar <mingo@redhat.com>,
Marcelo Tosatti <mtosatti@redhat.com>,
Michal Hocko <mhocko@kernel.org>, Oleg Nesterov <oleg@redhat.com>,
Peter Zijlstra <peterz@infradead.org>,
Thomas Gleixner <tglx@linutronix.de>,
Valentin Schneider <vschneid@redhat.com>,
Vlastimil Babka <vbabka@suse.cz>,
linux-mm@kvack.org
Subject: Re: [PATCH 6/6] mm: Drain LRUs upon resume to userspace on nohz_full CPUs
Date: Thu, 3 Jul 2025 15:28:23 +0100 [thread overview]
Message-ID: <aGaTh2esRWr3L6IC@casper.infradead.org> (raw)
In-Reply-To: <20250703140717.25703-7-frederic@kernel.org>
On Thu, Jul 03, 2025 at 04:07:17PM +0200, Frederic Weisbecker wrote:
> +unsigned int folio_batch_add(struct folio_batch *fbatch,
> + struct folio *folio)
> +{
> + unsigned int ret;
> +
> + fbatch->folios[fbatch->nr++] = folio;
> + ret = folio_batch_space(fbatch);
> + isolated_task_work_queue();
Umm. LRUs use folio_batches, but they are definitely not the only user
of folio_batches. Maybe you want to add a new lru_batch_add()
abstraction, because this call is definitely being done at the wrong
level.
next prev parent reply other threads:[~2025-07-03 14:28 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-07-03 14:07 [PATCH 0/6 v4] sched/mm: LRU drain flush on nohz_full Frederic Weisbecker
2025-07-03 14:07 ` [PATCH 1/6] task_work: Provide means to check if a work is queued Frederic Weisbecker
2025-07-03 14:07 ` [PATCH 2/6] sched/fair: Use task_work_queued() on numa_work Frederic Weisbecker
2025-07-03 14:07 ` [PATCH 3/6] sched: Use task_work_queued() on cid_work Frederic Weisbecker
2025-07-17 16:32 ` Valentin Schneider
2025-07-03 14:07 ` [PATCH 4/6] tick/nohz: Move nohz_full related fields out of hot task struct's places Frederic Weisbecker
2025-07-17 16:32 ` Valentin Schneider
2025-07-03 14:07 ` [PATCH 5/6] sched/isolation: Introduce isolated task work Frederic Weisbecker
2025-07-17 17:29 ` Vlastimil Babka
2025-07-18 9:52 ` Valentin Schneider
2025-07-18 14:23 ` Frederic Weisbecker
2025-07-03 14:07 ` [PATCH 6/6] mm: Drain LRUs upon resume to userspace on nohz_full CPUs Frederic Weisbecker
2025-07-03 14:24 ` Michal Hocko
2025-07-03 14:28 ` Matthew Wilcox [this message]
2025-07-03 16:12 ` Michal Hocko
2025-07-17 19:33 ` Vlastimil Babka
-- strict thread matches above, loose matches on Subject: below --
2025-04-10 15:23 [PATCH 0/6 v3] sched/mm: LRU drain flush on nohz_full Frederic Weisbecker
2025-04-10 15:23 ` [PATCH 6/6] mm: Drain LRUs upon resume to userspace on nohz_full CPUs Frederic Weisbecker
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